Re: net: heap out-of-bounds in fib6_clean_node/rt6_fill_node/fib6_age/fib6_prune_clone

[David Ahern]

On 4/18/17 2:43 PM, Andrey Konovalov wrote:
> Hi!
> 
> I've finally managed to reproduce one of the crashes on commit
> 4f7d029b9bf009fbee76bb10c0c4351a1870d2f3 (4.11-rc7).
> 
> I'm not sure if this bug has the same root cause as the first one
> reported in this thread, but it definitely has to do with ipv6
> routing.
> 
> C reproducer, syzkaller program and my .config are attached.

built a kernel with that config. booted the vm. ran the program. nada.

strace is showing:

clone(child_stack=0x72ffb0,
flags=CLONE_NEWUTS|CLONE_NEWUSER|CLONE_NEWPID|CLONE_NEWNET) = -1 EINVAL
(Invalid argument)